The degradation and mineralization of phenol have been studied by means of photocatalysis process using UV light (λ_max ≈ 365 nm). The investigated nanocompositephotocatalyst TiO₂-Py(750) (S_BET=16.58 m².g^− 1), with mixed phases of Anatase and Rutile (52.2/10.7), have been sol-gel synthetized and calcined at 750 °C using a decarbonatedpyrophyllite as layered clay and titanium (IV) t-butoxide, Ti(OCH₂CH₂CH₂CH₃)₄as precursor. Best results were achieved with TiO₂-Py(750), which showed great photo-activity than that of labe-made TiO₂ ECT1023t and commercial TiO₂AEROXIDE®P25. The influences of different operating parameters, like pH, H₂O₂ concentration, photocatalyst dose, on the photodegradation of phenol by UV/TiO₂-Py(750) system were examined. The TiO₂-Py(750) showed total degradation, detoxification and good TOC mineralization at optimum conditions (pH = 5, [H₂O₂] = 10 mmol.L^− 1, m = 2 g.L^− 1). The toxicity analysis was carriedout based on the inhibition of bioluminescence of the marine bacteria Vibrio fischeri. The title photocatalysts have been investigated by UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transformed infrared spectroscopy (FTIR) and BET specific surface area.

通过使用紫外光（λ _max  ≈ 365 nm）的光催化过程研究了苯酚的降解和矿化。所研究的纳米复合光催化剂TiO ₂ -Py(750) (S _BET =16.58 m ² .g ^{− 1} )，具有锐钛矿和金红石的混合相 (52.2/10.7)，已经溶胶-凝胶合成并在 750 °C 下使用脱碳酸叶蜡石作为层状粘土和钛(IV)叔丁醇、Ti(OCH ₂ CH ₂ CH ₂ CH ₃ ) ₄作为前体。使用 TiO ₂ -Py(750)获得了最好的结果，与实验室制造的 TiO ₂相比，它显示出更好的光活性ECT1023t 和商用 TiO ₂ AEROXIDE®P25 。考察了pH、H ₂ O ₂浓度、光催化剂剂量等不同操作参数对UV/TiO ₂ -Py(750)体系光降解苯酚的影响。TiO ₂ -Py(750) 在最佳条件下（pH = 5，[H ₂ O ₂ ] = 10 mmol.L ^{- 1}，m = 2 gL ^{- 1}）显示出完全降解、解毒和良好的TOC矿化。基于抑制海洋细菌Vibrio fischeri的生物发光进行毒性分析. 已通过紫外-可见漫反射光谱 (UV-Vis DRS)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、X 射线衍射 (XRD)、傅里叶变换红外光谱 (FTIR) 研究了标题光催化剂和 BET 比表面积。